@article{fdi:010091974,
  title = {{C}ombined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models : eddy-induced advection at eddy-permitting resolutions},
  author = {{R}uan, {X}. and {C}ouespel, {D}. and {L}evy, {M}arina and {L}i, {J}. and {M}ak, {J}. and {W}ang, {Y}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}cean general circulation models at the eddy-permitting regime are known to under-resolve the mesoscale eddy activity and associated eddy-mean interaction. {U}nder-resolving the mesoscale eddy field has consequences for the resulting mean state, affecting the modelled ocean circulation and biogeochemical responses, and impacting the quality of climate projections. {T}here is an ongoing debate on whether and how a parameterisation should be utilised in the eddy-permitting regime. {F}ocusing on the {G}ent-{M}c{W}illiams ({GM}) based parameterisations, it is known that, on the one hand, not utilising a parameterisation leads to insufficient eddy feedback and results in biases. {O}n the other hand, utilising a parameterisation leads to double-counting of the eddy feedback, and introduces other biases. {A} recently proposed approach, known as splitting, , modifies the way {GM}-based schemes are applied in eddy-permitting regimes, and has been demonstrated to be effective in an idealised {S}outhern {O}cean channel model. {I}n this work, we evaluate whether the splitting approach can lead to improvements in the physical and biogeochemical responses in an idealised double gyre model. {C}ompared with a high resolution mesoscale eddy resolving model truth, the use of the {GM}-based {GEOMETRIC} parameterisation together with splitting in the eddy-permitting regime leads to broad improvements in the control pre-industrial scenario and an idealised climate change scenario, over models with and models without the {GM}-based {GEOMETRIC} parameterisation active. {W}hile there are still some deficiencies, particularly in the subtropical region where the transport is too weak and may need momentum re-injection to reduce the biases, the present work provides further evidence in support of using the splitting procedure together with a {GM}-based parameterisation in ocean general circulation models at eddy-permitting resolutions.},
  keywords = {{S}cale-aware mesoscale eddy parameterisation ; {O}cean circulation ; {C}limate change ; {N}umerical modelling ; {B}iophysical interactions},
  booktitle = {},
  journal = {{O}cean {M}odelling},
  volume = {190},
  numero = {},
  pages = {102396 [15 ]},
  ISSN = {1463-5003},
  year = {2024},
  DOI = {10.1016/j.ocemod.2024.102396},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091974},
}